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Porting parcel shelf 

 

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 Post subject: Re: Porting parcel shelf
Posted: Thu Apr 05, 2012 11:46 pm 
Getting Side Ways
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Location: albion park, wollongong
NSW, Australia

my ef i had, it had holes cut out in the parcel shelf for 6x9's . i thought it came like that factory lol

 

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 Post subject: Re: Porting parcel shelf
Posted: Fri Apr 06, 2012 3:32 pm 
Getting Side Ways
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Ride: 1995 EF Fairmont

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data_mine wrote:
FYI,

Adding ports, is not something you 'just do'.

A port is a properly designed tube to control air flow. To design it properly you need to calculate the size of the 'box' used (in this case the whole boot), the properties of the sub woofer, and what frequency you want to accentuate (or not).

Just adding two 2" ports will - unless via some weird coincidence - do more harm than good.

Don't waste your time.

This.

 

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